Filter



(No Model() A. s; KRoTz. FILTER.

N0. 579,154, Patented Marl 23 1897.

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Nits STATES ALVARO S. KROTZ, OF SPRINGFIELD, OHIO.-

FILTER.

SPECIFICATION forming part of Letters Patent No. 579,154, dated March 23, 1897. Application filed June 3, 1896- Serial No. 594,097. (No model.)

To all whom, t 111,003/ concern:

Be it known that I, ALVARO S. KROTZ, a

citizen of the United States, residing at Springfield, in the county oi Clark and State of Ohio, have invented certain-new and useful Improvements in Filters, of which the following is a specification.

My invention relates to improvements in oil-filters.

The object I have in view is tov produce a filter which will be successful in spite of unskilled treatment. I accomplish this result by making a filter of two vertical chambers with a communication having a wide upper surface below and placing Within each chamber a removable filtering-partition and by filling both chambers above the communicating-plate with pure water.

Figure 1 is a sectional View; Fig. 2, a crosssectional View on the line :c of Fig. l. Figs. 3 and 4 are modifications of Fig. l; and Fig. 5 is a bottom view of plate a2 in Figs. l and 2, showing position of ridges.

In Fig. l, d is the chamber or walls of the apparatus. d is a division-wall which extends from a point near the bottom of the tank to the top. On the bottom of this division-wall is a cross partitionwall a2, extending on an angle, as shown in Fig. 2, and leaving openings B2 B3 B4.

In the modified form communication is made between the two chambers by means of a short pipe or hose B30.

Vithin the two chambers B B is a perfo rated plate d3, with a standard di, t-he plate a3 resting on lugs e30. Slidingly mounted on stem a4 is a perforated plate a5. Between the plates a3 and a5 is placed a 4Jiltering` material a7, which is held in a compressed state by means of a pin a6. This built-up partition can `readily be removed by means of the stem d4 and the filtering material replaced without disturbing or draining the chambers.

In operation the chambers are filled with water until the partition a2 is submerged in water, and then the unfiltered oil is poured into chamber B, passing down and through the filtering material and crowding the water into chamber B until the oil reaches below the plate a2. It then iiows under the plate and into the chamber B', passing up through the water and filtering material. Thus as B is filled the oil flows around to B in proportion as B is drained, for which purpose a cock B5 is provided. The partition-wall a can extend to the bottom and have perforations for the passage of the oil. Vhen plates a2 are used, the perforations bein g located below the same, preferably upon the bottom of the plate a2, I place downwardlyprojecting strips d20, arranged in such a manner as to lengthen the travelnof the oil under the plate. This can either be accomplished by short strips d20, placed in alternate positions, as shown in Fig. 4, or curved strips d20 can be used, as shown in Fig. 5.

I-Iaving described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l'. In a filter the combination with two vertical chambers a communication near the bottom and between said chambers and a liltering-partition placed within the chambers and above said openings, and a cross wall. or plate located near to and above said communication and placed on an oblique angle, and

van opening between the outer edge of said cross-wall and the wall of the apparatus.

2. In a filter the combination with the wall or Walls separating the tanks, of an inclined plate provided with downwardly-projecting ribs or strips between or around which the oil is forced to travel by said plate being subjected to a water-pressure from below.

In testimony whereof I have hereunto set my hand this 25th day of May, A. D. 18961.

ALVARO S. KROTZ.

IVitnesses:

ELMER E. K'UQUA, FRANK RIGHTMYER. 

